Distilling the topology of the Hofstadter model through a diffraction experiment

Francesco Di Colandrea, ∗ Alessio D’Errico, ∗ Maria Maffei, Hannah M. Price, Maciej Lewenstein, 5 Lorenzo Marrucci, 6 Filippo Cardano, † Alexandre Dauphin, ‡ and Pietro Massignan 7 Dipartimento di Fisica, Università di Napoli Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 80126 Napoli, Italy Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom ICFO – Institut de Ciencies Fotóniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain ICREA, Pg. Llüıs Companys 23, 08010 Barcelona, Spain CNR-ISASI, Institute of Applied Science and Intelligent Systems, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy Departament de F́ısica, Universitat Politècnica de Catalunya, Campus Nord B4-B5, 08034 Barcelona, Spain